Any "educational" message that ends with a sales pitch should be taken with a grain of salt, in my opinion.
I'm not convinced that the two case studies he highlighted present convincing information that the health problems experienced were a result of Iodine (no mention of co-supplements in those cases, no background on their prior health status). And why was the case study closed on details of Amalgam removal and vitamin C infusion?
In terms of excess Iodine causing thyroid die off, that has no basis in science. The body excretes what it does not need.
Too many loose relations turned into causal ones, in this self-promotonial sales pitch.